Our Research Process
Every product in our catalog goes through a multi-step verification process. We don't just take marketing claims at face value — we dig deeper to understand what's actually in each product.
- Product identification — We identify products that claim to be PFAS-free or use materials known to be inherently PFAS-free.
- Material analysis — We research all materials used in food-contact surfaces, including coatings, sealants, and treatments.
- Documentation review — We review brand statements, certifications, lab reports, and manufacturing policies.
- Tier assignment — Based on the evidence, we assign a verification tier that reflects our confidence in the product's PFAS-free status.
- Ongoing monitoring — We watch for material changes, reformulations, and new information that might affect a product's status.
Understanding Verification Tiers
Our tier system helps you quickly understand how confident we are in a product's PFAS-free status. Higher tiers indicate stronger evidence.
Monitored
These products have the highest level of verification. They've been lab tested and are subject to ongoing monitoring and periodic re-verification. The manufacturer has committed to supply chain transparency.
Lab Tested
Third-party lab testing has confirmed these products are PFAS-free. We've reviewed the lab reports and verified the testing methodology.
Policy Reviewed
We've reviewed the manufacturer's PFAS-free policies and documentation. While not lab tested, the evidence supports the PFAS-free claim.
Brand Statement
The manufacturer claims this product is PFAS-free, but we haven't been able to independently verify the claim. Use with appropriate caution.
Unknown
We haven't yet verified the PFAS status of this product. It may be PFAS-free, but we don't have enough information to confirm.
What We Look For
Materials
Some materials are inherently PFAS-free because they don't contain fluorinated compounds:
- Cast iron (with oil-based seasoning)
- Carbon steel (with oil-based seasoning)
- Stainless steel
- Enameled cast iron or steel
- Ceramic (true ceramic, not ceramic-coated)
- Glass
Coatings
We pay special attention to coatings, as many "non-stick" coatings contain PFAS. Safe coating alternatives include:
- Vitreous enamel
- Vegetable oil seasoning
- Sol-gel ceramic coatings
- Silicone-based coatings (PFAS-free varieties)
Ready to find PFAS-free products?
Browse our catalog of verified PFAS-free kitchen products.